Quercus glauca, namely Quercus glauca, Castanopsis, Cyclobalanopsis glauca, alias green Cyclobalanopsis glauca, Fagaceae cyclobalanopsis
Plant, is a major component of China's subtropical forest, China eastern subtropical humid evergreen broad-leaved forest and the main advantage of north subtropical evergreen and deciduous broad-leaved tree species. In Shaanxi, Gansu, Jiangsu, Anhui, Zhejiang, Jiangxi, Fujian, Taiwan, Henan, Hubei, Hunan, Guangdong, Guangxi, Sichuan, Guizhou, Yunnan, Tibet and other provinces. 60-2 was born in an altitude of 600 meters of slope or gully. This is the one of the most widely distributed species in china. North Korea, Japan and India have distribution.
cyclobalanopsis glauca Morphological character
Evergreen trees, up to 20 meters, diameter up to 1 meters. Branchlets glabrous. Leaves leathery, obovate elliptic or oblong, 6-13 cm long, 2-5.5 cm wide, apex acuminate or caudate, base rounded or broadly cuneate, margin sparsely serrate above middle lobe, lateral veins 9-13 on each side, dorsal branch, leaf glabrous, leaf back neatly Ping Fubai single hair color when old, gradually fell off, often with white scaly husks; petiole 1-3 cm long. Male inflorescences 5-6 cm long, rachis was pale tomentose. Infructescences 1.5-3 cm long, with fruit 2-3. Cupule bowl, bag of nuts 1/3-1/2, 0.9-1.4 cm in diameter, 0.6-0.8 cm tall, was thin hair; bracteoles forming 5-6 concentric rings, entire or thin band notched, closely arranged. Nuts long ovate, ovate or elliptic, 0.9-1.4 cm in diameter, 1-1.6 cm tall, glabrous or thin hair, the flat or slightly convex. Florescence 4-5 month, fruit period in October.
cyclobalanopsis glauca geographical distribution
Adaptation of Cyclobalanopsis glauca, widely distributed in the subtropical region of China, in Japan and korea, India, Burma and other countries have distribution. Roughly the north boundary of distribution for evergreen broad-leaved tree species distribution in our country is bounded on the north, Qinling Mountains - southern slope of Funiu Mountain - Tongbai mountain and North Slope of the north slope of Dabie Mountain - Ning Zhen mountain - Shanghai Dajinshan Island Line; the South can spread to Guangxi Jingxi, Debao, northern Guangdong, southern Fujian and Taiwan, the main peak of Yushan West to Yunnan; distribution of the upper reaches of the Nu River, Tibet Himalaya south slope of Shandong; East China's Zhejiang distribution to the coastal areas of Fujian and Taiwan, etc.. Cyclobalanopsis glauca in Guangxi are distributed around the common, Yu Guilin, new Jingxi, and Rongxian County, was born in low altitude to the elevation of the limestone rock slope soil, rock soil and stone in soil.
cyclobalanopsis glauca The research and application of Cyclobalanopsis glauca
Cyclobalanopsis glauca has strong resistance to sulfur dioxide, can be used as a green tree; the ratio of content of chlorophyll and anthocyanin because the with the change of the weather and to change the color, can be used as a weather tree.
Oak wood properties are excellent, travel, tool handles, material pulley, plane frame chisel etc..
The seed starch containing 60-70%, can be used as feed, wine; bark tannin containing 16%, 10%-15% can make cupule tannin extract.
Oak contains a large number of biologically active substances, is an important wild starch, sugar and vegetable tannin important resources. The kernel contains amino acids like milk, beans and meat taste delicious; various properties of seed oil were similar to olive oil, is a good edible oil. The kernel is rich in tannins and brown pigment.
Oak contains a large number of bioactive compounds, including tannins, alkaloids, polysaccharides, polyphenols, flavonoids, the tannin content is higher, up to 18%~25%. The oak tannins with history, has been for a long time. North Korea's Energy Research Institute with oak tannins in the wastewater of uranium and other heavy metals. The brother ethics than the University Chiou were the oak tannin antioxidant research. University of Colorado of oak tannin precipitation changes in activity of protein were studied. British scholar of Cyclobalanopsis glauca proanthocyanidins (hydrolyzed tannins) isolation and structure identification of. The French scholar of oak tannins and polyphenols on animal toxicity and in vivo hydrolysis were reviewed. In recent years, our country scholars of anticancer, Cyclobalanopsis glauca extract conducted in-depth research on anti fatigue, anti-oxidation, antibacterial and hypolipidemic etc., and achieved certain results.